The Interaction of Hot and Cold Gas in Galaxies

Details The Interaction of Hot and Cold Gas in Galaxies The Interaction of Hot and Cold Gas in Galaxies

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1245i&link_type=abstract

Chandra Proposal ID #04600582

Physics

Chandra Proposal Id #04600582

Scientific paper

Sa galaxies have roughly equal amounts of hot and cold gas, yet little is known about the interaction between the two phases. It is possible that the gas is thermally coupled, with cold gas cooling hot gas where the two phases interface. This would lead to a softening of the X-ray spectrum in the area of overlap. Alternatively, the phases could be thermally isolated, so that the cold gas in front of the hot gas absorbs soft X-rays behind it. We propose to observe three galaxies with unusual HI distributions to search for the interaction between the two phases. We will verify whether the hot gas fills the holes in the HI distribution. We will also investigate the lack of very luminous LMXBs in spiral bulges, and determine the luminosity function of the LMXBs that do exist in the bulges.

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